Change is in the air in Penberthy Floss! Clementine Rose has to say goodbye. Her friends, Sophie and Jules, are moving back to France. While she is sad to see them go, Sophie has promised they will come back. Plus, Clementine will now have an overseas pen pal! At school and home, things are also changing. There's a new girl in Clementine's class who looks set to cause trouble. And at Penberthy House, Drew and Will have become such frequent visitors that Clementine begins to wonder whether a very special promise is about to be made.